31204231403 has 2 divisors, whose sum is σ = 31204231404. Its totient is φ = 31204231402.

The previous prime is 31204231393. The next prime is 31204231439. The reversal of 31204231403 is 30413240213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31204231403 - 2⁸ = 31204231147 is a prime.

It is not a weakly prime, because it can be changed into another prime (31204231453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15602115701 + 15602115702.

It is an arithmetic number, because the mean of its divisors is an integer number (15602115702).

Almost surely, 2^31204231403 is an apocalyptic number.

31204231403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31204231403 is an equidigital number, since it uses as much as digits as its factorization.

31204231403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31204231403 its reverse (30413240213), we get a palindrome (61617471616).

The spelling of 31204231403 in words is "thirty-one billion, two hundred four million, two hundred thirty-one thousand, four hundred three".